diff --git a/Jenkinsfile-voltha-build b/Jenkinsfile-voltha-build
index a0f211f..fab0f8c 100644
--- a/Jenkinsfile-voltha-build
+++ b/Jenkinsfile-voltha-build
@@ -46,12 +46,12 @@
                     echo "cleaning up"
                     export KUBECONFIG=$WORKSPACE/${configBaseDir}/${configKubernetesDir}/${configFileName}.conf
                     NAMESPACES="voltha infra default"
-                    for NS in $NAMESPACES
+                    for NS in \$NAMESPACES
                     do
-                        for hchart in $(helm list -n $NS -q | grep -E -v 'docker-registry|kafkacat');
+                        for hchart in \$(helm list -n \$NS -q | grep -E -v 'docker-registry|kafkacat');
                         do
-                            echo "Purging chart: ${hchart}"
-                            helm delete -n $NS "${hchart}"
+                            echo "Purging chart: \${hchart}"
+                            helm delete -n \$NS "\${hchart}"
                         done
                     done
                     """
diff --git a/VERSION b/VERSION
index 860487c..37c2961 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.7.1
+2.7.2